If the “Run as different user” option is missing from the menu when you right-click an icon in Windows, you can usually make the option appear by holding down the Shift key, then right-clicking the icon. If you would prefer to have the option appear when you right-click an executable without holding the Shift key, you can use these steps to enable it.
Windows Vista and Above
Windows 7, 8 and Vista users can permanently add the option to the menu by downloading and installing ShellRunas. ShennRunas is an official utility that is provided by Microsoft. Once ShellRunas is installed, the option will be available whenever you right-click an executable file.
Windows XP & 2000
1. Log on with admin rights.
2. Right-click My Computer and click Manage.
3. In Computer Management, click the plus sign next to Services and Applications, and then click Services.
4. While in the details pane:
- In Windows 2000: Right-click the RunAs service, then click Properties.
- In Windows XP: Right-click Secondary Logon service, then click Properties.
5. In Properties set Startup type to Automatic, and click Start.
6. After the computer starts the service, click OK and close out of the window. The “Run as different user” service should now be an option when you right-click an icon.